Some stats from the first two rounds of the most accessible March Madness on Demand offered by CBS (NYSE: CBS) and the NCAA:

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—Hours streamed during Round 1: 2,883,604 total hours, surpassing the total of 2,598,889 for 2007

—Unique users through Day 3: 3,697,249—up 102 percent over 1,831,574 in 2007. That 2007 number was almost passed on the first day, when 1,751,956 unique visitors were recorded. The first-day traffic in 2007 was 789,045.

—Boss button: 2,116,787 clicks through 5 p.m. Sunday

We’ll update when more complete data is released Monday but it looks like the new strategy of dropping registration and increasing social media activity via Facebook and widgets may be paying off.  CBS CEO Leslie Moonves has said he expects $23 million in advertising this year. The mash-up mixer showed 373 videos created but it only went live Friday.

Our EconHealth conference and travel got in the way of my usual obsession with the first round of March Madness or the numbers here would have been a little higher. Even so, at several points late Friday and during the second round this weekend, our two-member household was watching snippets of games on the CBS TV broadcast and tracking the games we really wanted via our laptops with March Madness on Demand—in turn, keeping us from cursing the switches during those games. It also was the first year we haven’t subscribed to DirecTV’s (NYSE: DTV) March Madness package and we barely missed it. Aside from the oddness of being on different clocks, sometimes at three different points in the same game, it went pretty smoothly. (Too bad the same can’t be said for a parent who tried to watch the Stanford-Cornell game on broadband Thursday but could never get the video to work.)

We even took MMOD to a favorite lunch place Saturday, shifting between a Sony (NYSE: SNE) Vaio with a 3G cell modem, the much smaller, but more convenient V Cast CBS channel on the Verizon (NYSE: VZ) LG (SEO: 066570) Voyager and SlingMobile’s view of our home TV feed on my AT&T (NYSE: T) Tilt. The handsets provide good on-the-go-coverage and the laptop fills a major programming gap but the TV still holds center stage.